Window-sash lock.



H. L. GORSON. WINDOW SASH LOOK.

APPLICATION FILED MAE. 5, 1909.

922,670, Patented May 25, 1909.

w. JMJZ PATENT @FFIQF.

HARRY L. CORSON, OF DAYTON, OHIO.

WINDOW-SASH LOCK.

Specification of Letters Patent.

Patented May 25, 1909.

Application filed March 5, 1909. Serial No. 481,375.

To all 2117mm may concern:

Be it known that I, IIARRY L. Consox, citizen of the United States, residing at Dayton, in the county of Montgomery and State of Ohio, have invented certain new and useful Improvements in lFindow-Sash Locks; and I do declare the following to be a full, clear, and exact description of the invention, such as will. enable others skilled in the art to which it appertains to make and use the same. reference being had to the accompanying drawings, and to the figures of reference mar ed thereon, which form a part of this specification.

This invention relates to improvements in window sash holders or fasteners designed for preventing the upper sash from being lowered or the lower sash from being raised from any position from without, and is especially adapted for the windows of residences as a safeguard against the entrance of thieves or others bent upon mischief.

In the accompanying drawings, Figure 1, is an elevation of the inner side of a window showing my device applied to the upper and lower sashes. Fig. 2, is a detached view of the device adapted to be applied to the upper sash. 8, is a top plan view of the device as illustrated in Fig. 2. Fig. a, is an end view of the device adapted to be attached to the lower sash. F 5, is a top plan view of Fig. l. Fig. 6, is an elevation of Fig. 4:, with the frame shown in section. Fig. 7, is an enlarged view of the end of the dog.

In a detail description of the invention, similar reference characters indicate corresponding parts.

1 designates a dog having a sharp pointed engaging end 2 and a rearward projecting portion a designates the upright bifurcated sides of the frame between which said dog is pivoted by means of a pin 5, said sides extending from a base 5 which forms a bracket attacl'iable to the upper horizontal portion 6 of the lower sash by means of a suitable number of screws 7. Engaging the inner end 3 of the dog is a leaf spring 8 which exerts a normal pressure on said dog on the inner side of the pivot to keep the pointed end of the dog in engagement with the side 9 of the window casing or frame.

In order to apply the device to the upper sash, the position of the dog 1 is reversed and the supporting frame is modified as shown in Figs. 2 and 3, to provide a base portion 10 which is joined to the sides 4 between which the dog 1 is pivoted as in Fig. 4-. The base 10 of the frame is secured to the upper horizontal portion 11 of the upper sash and the spring 8 exerts the same pressure against the upper dog to maintain it in contact with the side 9 of the window frame. Either sash may be moved from, within, for example the upper sash may be lowered or the lower sash may be raised by moving the dog away from engagement with the window casing, but while the dogs are held in engagement with said parts under the pressure of the spring, any attempt to lower the upper sash or raise the lower sash will be resisted by the sharp point of the dog embedding itself in the window casing.

In order to prevent the sharp point of the dog from mar-ring the windowcasing in raising the upper sash from a lowered position or lowering the lower sash from a raised position, the sharp point of the dog is incased in a thin rubber casing 12 as shown in Fig. 7, said figure being an exaggerated view of the dog in order to illustrate this rubber casing. The point of the dog, however, readily penetrates the rubber casing if the window sashes are moved in the direction in which the dog offers its resistance, for examplein moving the upper sash down from any position or in moving the lower sash up from any position.

Having described my invention, I claim:

A window sash holder adapted to prevent the opening of a window sash, the same consisting of a frame attachable to one side of the window sash and having a bifurcated extension, a dog pivoted between said bifurcated extension, said dog having a sharp engaging point inclosed by a penetrable sub stance and adapted to engage the window casing in one movement of the sash and to ride freely thereover in the other movement of said sash, and a spring exerting a pressure upon the inner end of said dog to maintain the sharp point thereof in engagement with the window casing, as herein shown and described.

In testimony whereof I aflix my signature, in presence of two witnesses.

HARRY L. CORSON. Witnesses R. J. MGCARTY, li lATrI-mw SIEBLER, 

